Automatic closing atomizer casing



May 13, 1941. PETERSON 2,241,920

AUTOMATIC CLOSING ATOMIZER CASING Original Filed Marbh 19, 1938 III.

21: 6. PETERSON INVENTOR BY M g AT N EY Patented May 13, 1941 UNITE STATPATE'E anromaric oaosnve ATOMIZER CASING Eric G. Peterson, Glen Ridge,N. 5., assignor to Peabody Engineering Corporation, New York,

22 Claims.

The present invention relates to the mounting of the removable atomizertubes employed in fuel burners and is a division of application forpatent on Fuel burners, Serial No. 196,878, filed March 19th, 1938, nowPatent 2,190,190, February 13,

- withdrawn; which will open .automatically to admit the atomizer in thereverse operation of inserting the atomizer tube and in which the valveparts preventing flow in opposite directions will be fully guarded andprotected against injury from the atomizer tube as it is being insertedor removed.

Other objects and the novel features of the invention will appear andare set forth in the following specification.

The drawing accompanying and forming part of the specificationillustrates one of the present commercial embodiments of the invention.The structure, however, may be modified and changed in various ways asregards this present illustration as will be apparent from the truespirit and broad scope of the invention as hereinafter defined andclaimed.

Figure 1 is a top plan view of the casing at the outer end of thediffuser pipe which serves as a mounting or coupling for the removableatomizer tube, shown with the top of the casing removed to exposethereversely acting interconnected check valves and with the diffuserpipe and atomizer tube broken away.

Figure 2 is a broken side elevation of the same parts, with the cover inplace and parts appearing in section as on substantially the plane ofline 22 of Figure 1.

Figure 3 is a broken sectional view with the atomizer removed and thereversely acting valves both closed.

Figure 4 is a cross sectional view of the atomizer supporting casing ason substantially the plane of line 4-4 of Figure 3.

In the several views the burner support tube or diffuser pipe isindicated at 5 and the atomizer tube at 6.

The outer end of the diffuser pipe carries a casing 1 which forms amounting and provides a coupling for the atomizer. For such mounting andcoupling purposes the atomizer tube is shown as having a head 8 at itsouter end engageable at 9 over a guide pin H! on the breech of thecasing and adapted to be forced by the clamp screw ll of a swinging yokel2 into firm gas and liquidtight engagement with the end of the casing.Gaskets such as indicated at It are usuallyprovided to seal the atomizerhead at-l i and the fuel connections 15 which make up at Hi.

To prevent flow of gases or liquids in either direction through thediffuser pipe when the atomizer is withdrawn, automatic reverselyclosing check valves are arranged within the casing, one of these valvesI1, swinging inwardly to freely admit the atomizer tube and closingoutwardly against an annular valve seat 18 to prevent outfiow of gas orliquid through the diffuser pipe; and the other check valve l9 swingingoutwardly to clear the atomizer tube and closing inwardly against anannular valve seat 20 to prevent inward flow of gas or liquid throughthe diffuser pipe. A

The two valves are shown as hung on pivot pins 2!, 22, seated in theupper portion of the casing. Valve IT is shown as having spacedsubstantially parallel ridges 23 on the back of the same, extended atthe top as pivot lugs engaged with the ivot pin 2! and valve I9 is shownas having similarly spaced substantially parallel projections 24 on theback of the same. Pivotally engaged on pin 2i between the substantiallyparallel ridges 23 of the first valve is a free swinging lever 25projecting between the ridges or flanges 24 of the second valve intoposition to engage thecross pin 26 carried by the latter. v

The lever 25 is thus pivotally supported over the back of the first orinwardly opening valve ll, Figure 3, so that as the latter is pushedinwardly and upwardly by an inserted atomizer tube, it will be liftedinto engagement with cross pin 26 and will thereupon swing the second,outwardly opening valve I9 upwardly, in advance of the entering end ofthe atomizer. The second outwardly opening valve is thus automaticallyswung up out of the way of the atomizer and preferably supported by thelever, entirely clear of the atomizer tube, substantially as shown inFigure 2.

To prevent engagement between the atomizer tube and the sealing faces ofthe valves, the latter are shown as having rounded or inclined, camlikeprojections 27, 28 within the circular outlines of the valve faces anddesigned to act-as guards which will prevent any contact between thevalve faces and atomizer tube under all possible relations of theseparts.

To prevent the atomizer tube from engaging the valve seats is, 20, thelatter are shown as set back from the passages 29, 3B, which theysuraction of the same.

i the valve seats.

round, by bevel clearances 3!, 32 and the casing is shown as having agenerally circular web 33 intermediate its ends to confine and guide theatomizer tube to a path in which it cannot strike such valve faces. Thisannular guide web is cut through at the top as at 34 for free passage ofthe valve lifting lever 25 and the flanges or ridges 23 on the back ofthe first valve element.

To enable ready inspection of the valves and valve lifting mechanism,the casing is illustrated as having a removable top or cover 35. thiscover is in place the valves, valve seats and lifting lever are whollyenclosed and protected.

The two reversely acting valves do not interfere with free removal ofthe atomizer. As the end of the atomizer is withdrawn from engagementwith the supporting lug- 21 of the first valve,

When

the two valves drop to their closed positions, automatically sealing theburner support tube against flow of gas or liquid in either direction.In the closed position, the valves are disconnected as shown in Figure 3so that each can seat properly,

independent of the other. As indicated in this view the inwardly openingvalve I! will be opened to some extent by the incoming atomizer beforeit picks up the lever25 andthe latter will have a short movement beforeit picks up the second valve 19. There is thus the eifect of a lostmotion connection relation between the two valves, causingthem to act insuccession and leaving them free for self-adjusting movements in theclosing The action is wholly automatic, in the opening as well as in theclosing direction by reason of the special relation shown in which thevalves swing toward each other, so that ,onewill swing open with thepush of the entering atomizer tube and the lever operated from thisinwardly winging valve will then lift the other,'outwardly swingingvalve.

The valve seats being set back from the bores through which the atomizertube is passed are protected against injury from the atomizertube andthe intermediateguide web between the valve seats guards against theatomizer tube being shifted to some angle such that it might strike Theguard projections within the circular outlines of the valve facesprotect such faces against possible injury from the atomizer tube. Thusthe valves and valve seats can be relied on at all times to fully sealthe diffuser pipe whenever the atomizer tube is withdrawn. The difiuserpipe is sealed against flow therethrough when the atomizer is inposition by engagement .of the gasket [3, on the atomizer head with theprojecting bevelled lip I l, on the opposing end of the diffuser pipecasing.

The invention may be modified and changed to meet particularrequirements and the special features ofthe invention may, in somecases, be employed alone or used in different combinations. Variousfeatures of the invention may be applied to other than burner uses. Thusthe casing need not necessarily be a burner casing or the element whichis removably entered therein be an atomizer. The claims are to beconstrued accordingly andv terms employed are used in a descriptiverather than in a limiting sense, except possibly by state of the tion bysaid removable element and interconnecting means between said reverselyacting check valves for automatically effecting the lifting movement ofone when the other is shifted in an opening direction.

2. A support tube of the character disclosed, including a tubularmember, a removable element insertible and withdrawable through saidtubular member, reversely acting check valves for closing said tubularmember upon withdrawal of said removable element, including downwardlyswinging oppositely closing valve elements and a lift lever looselypivoted at the back of one valve element and having lifting engagementwith the other valve element.

3. In a burner, a tubular support, an atomizer removably entered in saidtubular support, oppositely faced check valves in said tubular support,automatically closing upon removal of said atomizer'and adapted to beopened by insertion of said atomizer, means for protecting said checkvalves from injury by. said atomizer and including abutment lugs on saidcheck valves disposed within the outlines of the seating faces of saidvalves and positioned for engagement by said atomizer.

4. A burner support tube of the character disclosed, including a tubularmember, an atomizer insertible and withdrawable through said tubular.member, reversely acting check valves for closing said tubular memberupon withdrawal of said atomizer, including downwardly swingingoppositely closing valve elements and a lift lever loosely pivoted atthe back of one valve element and having a' delayed lost motion liftingengagement with the other valve element.

5. Aburner support tube of the type described, comprising a tubularmember, an atomizer insertible in and withdrawable therethrough,multiple check valves for closing said tubular memher upon withdrawal ofsaid atomizer and means for opening one valve from and by the opening'of the other valve and including a delayed operating connection toallow one valve to remain closedwhen the-other valve is partly opened.

6. Aburner support tube, comprising a tubular casing having oppositelyfaced valve seats, oppositely swinging valves in said casing cooperablewith said valve seats, a lever member at the back of one valve andcooperable with the back of the other valve for effecting opening of thelatter when the. first valve is swung open, an atomizer tube insertibleinto and withdrawable fromsaid casing and adapted to displace the firstvalve in an' opening direction and a combined guard and guide for saidatomizer tube, comprising a web in the intermediate portion of thecasing between the valve seats, said web being 'substantiallyconcentricwith'saidvalve seats and having an opening through which said leveroperates.

7. In a burner, the combination of a casing, an atomizer tube insertiblethrough and withdrawable from said casing and self-closing oppositelyacting check valves in said casing pivoted to swing toward each otherand a pick up connection between said valves for enabling one valve,to'open the other reversely acting valve.

8. In combination, a casing,. opposed valve seats in spaced relationtherein, downwardly swinging self-closing check valves in said casingreversely cooperable with said valve seats and lever means operable fromone of said. valves for lifting the other ofsaid valves. .1 r

9. In combination, a casing, opposed valve seats in spaced relationtherein, downwardly swinging self-closing .checkvalves :in said casingreversely cooperable with said valve seats, lever means operable fromone of said valves for lifting the other of said valves and including afree swinging lever pivoted at the back of one valve and an abutment onthe back of the other valve in position to be engaged by said lever inthe upward lifting movement of the same.

10. In combination, a casing, opposed valve seats in spaced relationtherein, valves cooperable with said valve seats and pivoted in saidcasing for swinging movement toward each other, a lever at the back ofone of said swinging valves and an abutment on the back of the othervalve in position for engagement by said lever.

11. In combination, a casing, opposed valve seats in spaced relationtherein, valves cooperable with said valve seats and pivoted in saidcasing for swinging movement toward each other, a lever at the back ofone of said swinging valves, an abutment on the back of the other valvein position for engagement by said lever, said first valve havingflanges on the back of the same between which said lever is pivotallyguided and said abutment on the back of the other valve including across pin and flanges on the back of said other valve spaced to receivebetween them said lever and carrying said cross pin.

12. In combination, an atomizer tube, a supporting casing having anentrance opening for said tube at one end and having an opening at theopposite end for the projection of said tube, valve seats within saidcasing about said entrance and projection openings, an inwardly swingingcheck valve pivoted in said casing to cooperate with said valve seatabout the entrance opening and adapted to be swung inwardly into openposition by the entering atomizer tube, an outwardly swinging checkvalve pivoted to cooperate with the valve seat about the projectionopening and means operable by the inwardly opening check Valve forswinging open said out wardly opening check valve.

13. In combination, an atomizer tube, a supporting casing having anentrance opening for said tube at one end and having an opening at theopposite end for the projection of said tube, valve seats within saidcasing about said entrance and projection openings, an inwardly swingingcheck valve pivoted in said casing to cooperate with said valve seatabout the entrance opening and adapted to be swung inwardly into openposition by the entering atomizer tube, an outwardiy swinging checkvalve pivoted to cooperate with the valve seat about the projectionopening, means operable by the inwardly opening check valve for swingingopen said outwardly opening check valve and means in said casing betweensaid spaced opposed valve seats for guiding said atomizer tubesubstantially centrally through said casing.

14. In combination, an atomizer tube, a supporting casing having anentrance opening for said tube at one end and having an opening at theopposite end for the projection of said tube, valve seats within saidcasing about said entrance and projection openings, an inwardly swingingcheck valve pivoted in said casing to cooperate with said valve seatabout the entrance opening and adapted to be swung inwardly into openposition by the entering atomizer tube, an outwardly swinging checkvalve pivoted to cooperate with the valve seat about the projectionopening, means operable by the inwardly opening check valve for swingingopen said outwardly opening check valve and means in said casing betweensaid spaced opposed valve seats for guiding said atomizer tubesubstantially centrally through said casing and said valve seats beingset back from said passages a distance such that they will not beengaged by the atomizer tube thus guided in its movements through thecasing.

15. In combination, an atomizer tube, a supporting casing therefor,opposed valve seats in spaced relation within said casing, oppositelyacting check valves cooperable with said spaced valve seats and anintermediate guide for said atomizer tube within said casing betweensaid spaced opposed valve seats.

16. In combination, an atomizer tube, a supporting casing therefor,opposed valve seats in spaced relation within said casing, oppositelyacting check valves cooperable with said spaced valve seats and anintermediate guide for said atomizer tube within said casing betweensaid spaced opposed valve seats and including a generally circular webprojecting from the inner walls of said casing.

1'7. In combination, an atomizer tube, a supporting casing therefor,opposed valve seats in spaced relation within said casing, oppositelyacting check valves cooperable with said spaced valve seats, anintermediate guide for said atomizer tube within said casing betweensaid spaced opposed Valve seats and including a generally circular webprojecting from the inner walls of said casing, said web having anopening at the top, a lever projecting from the back of one valve andoperating through said opening and an abutment on the other valveengageable by said lever.

18. In a burner, a projecting tubular portion, a removable elementsealed in said projecting tubular portion and self-closing reverselyacting check valves at the outer end of said tubular portion andautomatically operable to close said tubular portion against flow inboth directions upon removal of said removable element and meansactuated by said removable element upon the insertion thereof in saidtubular portion to automatically open both of said check valves, wherebysaid removable element may be inserted without requiring othermanipulation of said check valves.

19. In combination with a tubular member, a removable member entered insaid tubular member and removable therefrom, quick releasable clampmeans for securing said removable member so entered in said tubularmember, endwise engaging means for automatically sealing said removablemember to said tubular member when so secured therein and check valvesfor automatically sealing said tubular member against flow therethroughin both directions upon removal of said removable member from saidtubular member and means actuated by said removable member upon theinsertion thereof in said tubular member to automatically open both ofsaid check valves, whereby said removable member may be inserted withoutrequiring other manipulation of said check valves.

20. A burner support tube having a tubular portion, a removable elementinsertable and withdrawable through said tubular portion, reverselyacting, self-closing check valves in said tubular portion forautomatically closing the same against passage of fluid in eitherdirection upon withdrawal of said removable element, and means actuatedby said removable element upon the insertion thereof in said tubularportion to automatically open both of said check Valves,

withdrawable through said tubular portion, re-

versely acting, self-closing check valves in said tubular portion forautomatically closing the same against passage of fluid in eitherdirection upon withdrawal of said removable element, means actuated bysaid removable element upon the insertion thereof in said tubularportion to automatically open both of said check valves, whereby saidremovable element may be inserted Without requiring other manipulationor opening of said check valves, and means for protecting said checkvalves from injury by said removable element.

22. A burner support tube having a'tubular portion, a removable elementinsertable and withdrawable through'said tubular portion, reverselyacting, self-closing check valves in said tubular portion forautomatically closing the same against passage of fluid in. eitherdirection upon withdrawal of said removable element, and

means actuated by said removable element upon the insertion thereof insaid tubular portion to automatically open both of said check valves,whereby said removable element may be inserted without requiring othermanipulation or opening of said check valves, and cooperating memberscarried by said tubular portion and said removable elementfor sealingsaid removable element in said tubular portion so as to prevent passageof leakage fluid therebetween when said removable element is in place.

ERIC G. PETERSON.

